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热制备
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  “热制备”译为未确定词的双语例句
     Solvothermal preparation and catalytic performance of nanometer Ce_(0.8)Zr_(0.2)O_2 solid solution
     纳米Ce_(0.8)Zr_(0.2)O)2固溶体的溶剂热制备与催化性能研究(英文)
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     (3) The synthesis of nano-Y_2O_2S via solvothermal process was tried with differentsulf- and yttric reactants.
     (3)初步进行了纳米Y_2O_2S的溶剂热制备,研究了不同硫源和钇源对其产物的影响。
短句来源
     Design Scheme for Preparing Domestic Hot Water by Using Condensation Heat from Air-conditioning System
     利用空调系统冷凝热制备生活热水的设计方案
短句来源
     The design scheme for preparing domestic hot water by using condensation heat from centralized air-conditioning system is analyzed with engineering example.
     结合工程实例,分析了利用集中式空调系统冷凝热制备生活热水的设计方案。
短句来源
     Using condensation heat from centralized air-conditioning system for preparing domestic hot water has a remarkable economy,and can save energy and reduce thermal pollution to environment.
     利用集中式空调系统冷凝热制备生活热水不仅具有明显的经济性,而且在节能的同时降低了对环境的热污染。
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     The preparation for thermo-spraying process coat
     喷涂涂层的制备
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     Preparation and Application of Thermo-Structural Composites
     结构复合材料的制备及应用
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     PREPARATION OF METHYL TERTIARY BUTYL ETHER
     甲基叔丁基醚的制备
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     HOT
     报!
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     Preparation of Glycerol Monooleate
     油酸甘油酯的制备
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(1) Amidophosphorates (II) could be obtained directly from the reaction of a secondary phosphite (I) with amines in the presence of carbon tetrachloride. This method could be slightly modified as follows:(a) The process was carried out without isolating the intermediate (I) by adding phosphorus trichloride to a mixture of alcohol and carbon tetrachloride and treating the crude product directly with amine.(b) Compounds (II) could be prepared by adding concentrated potassium hydroxide solution to a mixture of...

(1) Amidophosphorates (II) could be obtained directly from the reaction of a secondary phosphite (I) with amines in the presence of carbon tetrachloride. This method could be slightly modified as follows:(a) The process was carried out without isolating the intermediate (I) by adding phosphorus trichloride to a mixture of alcohol and carbon tetrachloride and treating the crude product directly with amine.(b) Compounds (II) could be prepared by adding concentrated potassium hydroxide solution to a mixture of (I), amine salt and carbon tetrachloride, instead of using free amine directly.(2) In the preparation of amidophosphorates (III) granulated sodium or potassium hydroxide, instead of dimethyl cyclohexyl amine, could be used as auxiliary base.(3) In an attempt to prepare the alkyl ester of dialkyl amidochlorophosphoric acid by heating alkyl dichlorophosphate with dried dialkylamine hydrochloride, instead of the desired product (VII), a resinous substance was obtained. It has been assumed that the first produced compound (VII) was polymerized by heating.

(一)利用二代亚磷酸酯(Ⅰ)与四氯化碳及强硷性胺的反应制备化合物Ⅱ,并简化制备过程。 (二)用价廉易得的氢氧化钠(或钾)的颗粒替代辅助剂二甲基环六烷胺,使弱硷性胺如苯胺亦能与Ⅰ和四氯化碳反应。 (三)拟用盐酸二甲基胺盐和Ⅳ共热制备Ⅶ;但仅得一胶状物。此物用五氯化磷处理得Ⅴ。

Abstract The zinc based compound crystals, which are composed of zinc anion coordinate tetrahedrons have two kinds of structure:one is wurtzite and the other is sphalerite.In this article the formation process and the ideal morphology of the sphalerite crystals are studied by calculating the stability energy of the crystal growth unit on the basis of the model of anion coordination polyhedron.The favorable growth unit for the growth of the sphalerite crystal is the tetrahedron.Thus the ideal morphology...

Abstract The zinc based compound crystals, which are composed of zinc anion coordinate tetrahedrons have two kinds of structure:one is wurtzite and the other is sphalerite.In this article the formation process and the ideal morphology of the sphalerite crystals are studied by calculating the stability energy of the crystal growth unit on the basis of the model of anion coordination polyhedron.The favorable growth unit for the growth of the sphalerite crystal is the tetrahedron.Thus the ideal morphology of sphalerite crystals is tetrahedron.The growth rate of the positive polar plane is different from that of the negative polar plane.It is proved by the calculation that zincoxide crystals are impossible to exist in sphalerite,so are zincsulphide crystals in wurtzite.

以配位四面体为结构单元的锌化合物晶体有闪锌矿和纤锌矿两种结构.从负离子配位多面体生长基元模型出发,结合水热制备实验,通过生长基元稳定能计算,描绘了闪锌矿硫化锌晶粒形成的过程,给出了其理想生长形态.正四面体状生长基元是闪锌矿硫化锌晶体的有利生长基元,基元正、负极面具有不同的生长速率,因此,正四面体形是闪锌矿硫化锌晶体的理想生长形态.基元稳定能计算结果证明硫化锌晶体不可能以纤锌矿结构存在;氧化锌晶体也不可能以闪锌矿结构生长.

The crystal growth experiments of zeolite A ware investigated in the hydrothermal system. The crystal growth process of zeolite A in hydrothermal condition was characterized by SEM, TEM and XRD. The results show that the four phases of the formation of the grains of zeolite A at hydrothermal condition are the dissolution of the feedstocks →the formation of the nucleus and small crystal particles →the aggregation growth of the small crystals(epitaxy)→the coalescence growth of the crystals(dissolution and crystallization)....

The crystal growth experiments of zeolite A ware investigated in the hydrothermal system. The crystal growth process of zeolite A in hydrothermal condition was characterized by SEM, TEM and XRD. The results show that the four phases of the formation of the grains of zeolite A at hydrothermal condition are the dissolution of the feedstocks →the formation of the nucleus and small crystal particles →the aggregation growth of the small crystals(epitaxy)→the coalescence growth of the crystals(dissolution and crystallization). The aggregation growth is the process of forming big crystals from small crystals by epitaxy, while the coalescence growth is the re-crystallization process that the small crystals are transported to big crystals. The difference of the two processes is if there exist the dissolution of small crystals and the re-crystallization of big crystals in the crystal growth process. Their thermal dynamics drive force shows that the total surface free energy is reduced because of the accretion of the average granularity of the particles. The aggregation growth is main way of the crystal growth of zeolite A.

通过对A型沸石的水热制备实验和晶体生长过程的检测表征研究,揭示了水热体系A型沸石晶粒的生成经历了前驱物溶解→成核并形成小晶粒→小晶粒的聚合生长(取向连生和配向附生)→晶粒的聚集生长(溶解和结晶)等4个阶段。聚合生长是小晶粒之间通过取向连生与配向附生形成粒度更大的晶粒的过程,而聚集生长则是物料从小尺寸晶粒向大尺寸晶粒输运的重结晶过程,它们的区别在于是否存在小晶粒的溶解和大晶粒的重结晶过程,但热力学驱动力都是由于晶粒平均粒度的增大降低了体系总的表面自由能。聚合生长是A型沸石晶粒长大的主要方式。

 
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